Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 449855: Find the value of z if 4 + z + 2 = 20 + 2z
Click here to see answer by marilynh(7)

Question 449896: I have two problems that I am stuck on to complete a quiz. The first one is 3[5m-(m+8)]>-4(m-7) I am suppose to use a set-builder notation to describe the complete solution. The second one is 3/4(5x-1/2)-5/3<1/3 I am suppose to find the solution set. I am so lost and have been working on this quiz for 5 hours straight.
Click here to see answer by rwm(914)

Question 449961: a direct dialed telephone call from Tampa to new york is $3.05 for the first 3 minutes and .70 cents for each additional minute or fraction thereof. If Juan's call cost $7.95 how many minutes was the call?
Click here to see answer by josmiceli(9817)

Question 449983: IF x+y=4 y=x-8, what is the value of x?
Click here to see answer by Gogonati(817)

Question 449995: Please show steps for solving for "k".
26=1.30(1+0.12)/k-0.12 = 1.456/k-0.12
Click here to see answer by ewatrrr(10682)

Question 449990: P = 1-√Q/R
Find Q
Click here to see answer by stanbon(57982)

Question 450009: Solve the equations by a method of your choice.
4x^2+15x+9=0
x^2-8x+16=0
x^2-2x-3=0
Click here to see answer by rwm(914)

Question 450009: Solve the equations by a method of your choice.
4x^2+15x+9=0
x^2-8x+16=0
x^2-2x-3=0
Click here to see answer by stanbon(57982)

Question 450009: Solve the equations by a method of your choice.
4x^2+15x+9=0
x^2-8x+16=0
x^2-2x-3=0
Click here to see answer by ewatrrr(10682)

Question 450027: 15 -1/2x=1/4x
Click here to see answer by rfer(12730)

Question 450102: Solve the following equation for k. n=8k-15m/3. Please show all your work

Click here to see answer by ewatrrr(10682)

Question 450102: Solve the following equation for k. n=8k-15m/3. Please show all your work

Click here to see answer by MathLover1(6813)

Question 450102: Solve the following equation for k. n=8k-15m/3. Please show all your work

Click here to see answer by jorel1380(2518)

Question 450106: The sum of three consecutive even integers is -24. Find the integers.
Click here to see answer by Alan3354(31537)

Question 450106: The sum of three consecutive even integers is -24. Find the integers.
Click here to see answer by ewatrrr(10682)

Question 450107: Three lockers are numbered consecutively (n,n+1,n+2) in such a way that the sum of the first and last lockers is the same as twice the middle locker number. What are the locker numbers?
Click here to see answer by ewatrrr(10682)

Question 450168: -42=-18-6c
a. c= -24
b. c=144
c. c=4
d. c=10
-42=-18-6c
-42+(18)=-18 +(18)-6c
-24=-6c
-24+6=-6+6
-18=c NOT ONE OF MY ANSWERS
Click here to see answer by stanbon(57982)

Question 450180: 9j+35=4j
Click here to see answer by jim_thompson5910(28717)

Question 450333: What am I doing wrong?
-5x-2[2x-4(x+7)]-6
Here is my work down.

-5x-2[2x-4(x+7)]-6
-5x-2[2x-4x+28]-6
-5x-4x-8x+56-6
-17x+50. I know that answer is wrong. But, why is the -8x not needed? Don't you distribute?
Thanks
Click here to see answer by rwm(914)

Question 450390: Solve the following equation:
x(x-2)(x-3)=0
Click here to see answer by richard1234(5390)

Question 450522: Translate the following problems into algebraic equations. It is not required that you solve the equations; simply translate them. Identify the variables, constants, and coefficients in each equation. Make equations with only one variable and simplify the equation on both sides until there are no parentheses and like terms have been combined.

1)Simplify the algebraic expression
6z + 1 + 4x2 - 3y3 + 7x - 8y2 + 2x2 - x + 5z - 17
and evaluate it for x = -2, y = -3, z = -5.
Identify the variables, constants, and coefficients in the simplified expression.
Translate the following problems into algebraic equations. It is not required that you solve the equations; simply translate them. Identify the variables, constants, and coefficients in each equation. Make equations with only one variable and simplify the equation on both sides until there are no parentheses and like terms have been combined.
2)42 is 40% of what number?
3)15 is what percent of 3?
4)The sum of the page numbers on facing pages of a book is 157; what are the page numbers?
5)A girl buys three apples and seven oranges for $4.56. If an orange costs $0.28 more than an apple, how much does each fruit cost?

Click here to see answer by edjones(7569)

Question 450541: Please help me to factorise the below given problems:
1. a+2b+acube+8bcube
2. xsquare-8/x
3. a-3b+acube-27bcube
4. asquare+bc-ac-bsquare
5. 4asquare-4ab+bsquare-4xsquare.

Thank You.
Click here to see answer by stanbon(57982)

Question 450588: Find the product.
(4x+3)(6x^2)
Click here to see answer by rwm(914)

Question 450589: Find the product.
(4x-5)(x+2)
Click here to see answer by rwm(914)

Question 450601: I need help with this problem. Amy paid $71.27 for a pair of running shoes during a 35%-off sale. What was the regular price?
Click here to see answer by rwm(914)

Question 450693: 5p - 14 = 8p + 4
Click here to see answer by stanbon(57982)

Question 450838: How do I solve the system by graphing x+y=21 and x-y=3? How do I figure out the point that lies on both lines?
Click here to see answer by Edwin McCravy(8999)

Question 450838: How do I solve the system by graphing x+y=21 and x-y=3? How do I figure out the point that lies on both lines?
Click here to see answer by Alan3354(31537)

Question 450874: Find a polynomial f(x) of degree 3 with real coefficients and the following zeros.
-1,3+i
f(x)=

Click here to see answer by solver91311(17077)

Question 450890: The function h is defined by h(x)=x^(2)-x.

Find h(2x).
Click here to see answer by ilana(307)

Question 450890: The function h is defined by h(x)=x^(2)-x.

Find h(2x).
Click here to see answer by stanbon(57982)

Question 451057: write the equation of a line containing the given point and perpendicular to the given line. (4,-8); 4x+7y=5
The equation of the line is Y=
Click here to see answer by robertb(4012)

Question 451061: Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form Y=MX+b.
(-3,3);4x=5y+6
The equation of the line is Y=
(Simplify your answer. Use integers or fractions for any numbers in the expression)
Click here to see answer by mananth(12270)

Question 451090: (4sqrt(3)-5)(2sqrt(3)+5)
(2sqrt(5)-6sqrt(7))(3sqrt(5)+sqrt(7))
Simplify
Thank you
Click here to see answer by Gogonati(817)

Question 451119: Find the product.....
(4x+3)(6x^2)
Click here to see answer by Gogonati(817)

Question 451211: 2x+3y=-4??????? i dont understand 8th grade math at all!! i was held back in 7th grade math
Click here to see answer by Alan3354(31537)

Question 451218:
Click here to see answer by jorel1380(2518)

Question 451371: The function h is is defined below
h(x)=(x+6)/(x^2+9x+8)
Find all values of x that are NOT in the domain of h.
If there is more than one value, separate them with commas.
Click here to see answer by valnadam(5)

Question 451391: 6X=X+35
6X-X=X+35
Click here to see answer by jorel1380(2518)

Question 451377: I'm so lost
The function h is is defined below
h(x)=(x+6)/(x^2+9x+8)
Find all values of x that are NOT in the domain of h.
If there is more than one value, separate them with commas.
Click here to see answer by kingme18(98)

Question 451559: hi, i really hope you choose to help me with this as i'm completely stuck! how do you work out questions such as 3x+5(8-x)=24-x
I have no idea where to start, and I also find problems like these with negative numbers extremely hard. Thank you for your time
Click here to see answer by confusedgirl81(14)

Question 451622: solve the simultaneous equations
4x+5y=0,
8x-15y=5.
x=
y=
Click here to see answer by ewatrrr(10682)

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